Enameling oven



Mag; 6, 1923.

D. LElssLER ENAMELING- OVEN Y Filed Oct 27, 1920 2 sheetsfsheet l Mar; 6,1923.L 1,447,795

l D. LEISSLER ENAMELING OVEN Filed Oct. 27, 1920 2 sheets-sheet 2 Patented li/lar. 6, 1923.`

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ENAMELrNs oven.

Application filed. October 27,1%20. Serial No. 419,825.

To ZZ wlw/ni it 11mg/ concern y Be it known that I, DANIEL Lnissnnn, a

citizen of the `United States, residingv at Chicago, in the county of Cook and State ot' Illinois, have invented certain new and useful 4Improvements in Enameling Ovens,

of which the following is a specification.

` This invention relates in general to ovens and has more particular reference to enamcling ovens adapted Vfor baking enamel on bath tubs and othervitreous ware. j @ne of the primary objects vof my invention is the provision of an oven of the character indicated which will be com-pact in structure and of reasonable cost in manufacture and which will produce and maintain a uniform temperature throughout the entire area, of the oven so as to result in an even anduniform baking to produce a perfectly' enameled and glazed article.

For the purpose of facilitating an understanding of the invention,v I have illus trated in the accompanying drawings one preferred embodiment thereof, from an inspection of which, when considered in connection with the' followingdescription, my invention and many of its inherent advantages may be readily understood and appreciated.

Referring to the drawings- Fig.v l is a vertical transverse sectional view through any oven exnl'iodying my invention, this view being taken substantially on the line 1*1 of Fig. d; l y F ig. 2 is ai horizontal sectional view on the line 2-2 of 1;

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig.` 1; p l `F ig. et is a longitudinal sectional view on the line 4-4 of Fig. 1; and

Figs. 5 and 6 are vfront andrear elevations respectively of an oven embodying my invention. A j

Referring now to the drawings more in detail, reference character 10 indicates generally the front and Vreference character 11 the rea-r end ot' myimproved oven. The body proper. indicated byiret'erencc 12 is composed of brickwork held together by an exterior frame 13 of any suitable construction and within this brickwork is contained the baking chamber 14 and the other associated parts of the oven. This baking chamber 11i extends longitudinally of the oven in horizontal position 'and the article or articles to be baked therein are inserted and removed through adoor;

4way at the rear closed by a vertically slid-able door 15 provided with an upward extension 16 to which counterweights (not shown) are attached, the door being guided in its vertical movements by guidewaysv 17. i A fire box 18 located beneath the forward portion ofthe baking oven is provided with gratos 19 disposed at an angle, as shown in Fig. 4. which serve to divide the fire boX so as to provide the ash pit 21 in the lower forward portionthereof. The coal or other fuel is introduced into the tire box through the :tiring door 22 at the front of the oven, and the ashes are removed in the customary manner tlirough the ash pit door 23 disposed beneath the firing door. The inclined position of the grates 19 serves to hold the burningfuel in yelevated position, permitting the free passage of air therethrough, while the termination of their lo-wer ends at a point remote from the ash pit Hoor, as will be evident from Fig. It, permits the clinkers and slag to drop vto the bottom of the fire boxand into the ash pit1 from which they are readily removable.

The products of combustion from the tire box, including the hot gases, rise against the forward portion of the ioo'r 2li of the 4baking chamber and flow rearwardly along substantially the entire length ofthe iioor through a horizontal flue 25 to the rear end of the door where they divide, passing up `the opposite sides 26 and' 27 of the .baking chamber th'rough the vertical lines 28 and v29 respectivelyA until they reach the crown ory apex of the baking chamber 14. Here the hot gases from the ues 28 and 29 meet and commingle above the arch of the baking chamber at the rear end thereof, and from this point they pass horizontally forwardly along thecrown of the baking chamber through an .aperture 32 formed by a pair of vertically'disposed partitions 33 and 3K1 which begin at the level of the floor 241-of the baking i oven and extend `upwardly between the walls of the baking chamber proper and the walls of the surrounding shell toa point near the crown of the oven. It is understood of course that the baking chamber proper comprises the side walls 26 and 27 and the arched roof 37, the surrounding shell spaced therefrom comprising the sides 35 and 36 and the arched 'roof 38. The

partitions 33 and 84 extend from the bak ing chamber walls to the outer shell 38 and divide the space into the flues just described for the hot gases.

After passing forwardly between the spaced upper ends of the partitions 33 and 34 the gases are divided and defiected downwardly from the roof and sides of the baking chamber by a partition 39 which is of inverted U-shape andi extends over the crown ofthe baking chamber and downlwardly on both sides thereof and terminates some little distance above the floor level of the baking chamber, as will be apparent from Figs. land 4. The hot gases iiowing downwardly in the'flues or passages between the partition 39 and the forwardly disposed partitions $33 and 34 flow rearwardly beneath tlie lower ends of the 4partitions 39 and rise upwardly on opposite sides of the baking chamber through the iiues 42 and 43, comminglingagain above the crown of the baking chamber, and pass Jforwardly between'the spaced ends of partitions 45 Aand 46 similar in all respects to the partitions 33 and 34 previouslyv described.` The hot gases now pass downwardly again on opposite sides of the baking chamber vthrough the flues 46 and 47 at the forward y ind'thereof and at the bottom of these flues .they flow horizontally outwardly into a pair of vertically disposed flues 48 and 49. These ues extend downwardly to the floor 5l of the oven, where they communicate withthe forward ends of a pair of floor iiues 52 and 53 respectively, best shown in Figs. 2 and 4. rllhese iioor flues extend rearwardly along thebottom. of the oven and intersect near the rear end thereof to form a short flue 54 which is controlled by a damper 55, the flue stack or chimney of any suitable construction (not shown).

It will be manifest therefore that on each side of, the central vertically longitudinal above the exterior of this chamber is divided into four sets of flues so that, the hot gases are conducted over the entire roof and sides of the baking chamber and are prevented from short circuiting from the upper rear `apex of the chamber directly to the lower forward'portion thereof. This fea--l ture in connection with the arrangement whereby the hot gases heat the entire floor of the baking chamber results in the production of a very uniform heat throughout the chamber. Also the arrangement whereby the hot gases after leavingythe baking chamber pass to the chimney through conduits positioned at the bottom, of the oven in brickwoik l2 insures that a great amount of heat passes from theflues 52, 53 and 54 upwardly to the brickwork to keep the latand appreciated from the foregoingwithout further description, b ut it should be obvious that the invention may be embodied in ovens differing materially in their details of construction without departing from the spirit of the invention as defined inthe following claims.

- I claim: r

l. ln'an `enaineling oven, `the combination with vertical side walls and aroof defining abaking chamber.- an outers'hell surrounding vsaid walls and roof and spaced therefrom, and common front and rear walls and a common floor for said chamber and shell, of a pair of side partitions rising from said floor within the-spacebetween the baking' chamber and shell between said front wall and the rear wall and terminating near the vapex of said space at points remote from each other, a single partition extending from the apex of said space between said front and rear walls, traversing the space between the baking chamber and shell downwardly on opposite sides of said chamber and terminating remotefroin said floor, apair of partitions similar to those first named positioned between said single partition and the rear wall, dividing the space between the baking chamber and shell from saidioor to a point near the apexk of said space and terminating shortv ofeach other, a tire box beneath the front end of thechamber, apassage leading from the fire box beneath said chamber to the rear end of the vseries of flues formed by the preceding named parts, and chimney connections communicating with the forward endsof said series of lues.`

2. In an enameling oven, the combination of a` bakingchamber, anv exterior shell surrounding the saine and spaced therefrom, a fire box beneath said chamber, a grate there.- in disposed at an incline with its lower end spaced from thefloor of theiire box, a passage for conducting the productsof combustion from said fire boxbeneath said chamber, to a point near the rear end thereof, passages for conducting said products upwardly at opposite sides of the chamber to the top thereof, thence forwardlyv and downwardly at oppositesides of the chamber, thence forwardly and upwardly at opposite sides of the chamber to the top thereof, thence forwardly and downwardly at opposite sides of the chamber to points at opposite 'sides of the fire box, flues extending along said fire box rearwardly, and an exhaust flue into which said flues discharge. y

' ln an enameling oven, the combination of' .e fire box, a baking chamber above said fire box, an exterior shell surrounding said products of combustion to onepend of' said Chamber and spaced therefrom, partitions conduit beneath the baking chamber7 fines disposed between said shell and said chamber at opposite sides of the lire box for Conduct providing in conjunction with the shell and ing said products of Combustion rearwardly, chamber a continuous conduit extending sucand an exhaust ue into which said liues cessively upwardly and downwardly along discharge.

the walls of the eharnber, means extending v l beneath the baking chamber for supplying DANEL LEISSLER. 

